Kankakee is a city in Kankakee County, Illinois, USA. As of the 2000 census, the city population was 25,561, and 26,840 as of a 2009 estimate. It is the county seat of Kankakee County. Kankakee is a principal city of the Kankakee–Bradley Metropolitan Statistical Area, which includes all of Kankakee County.
Kankakee is located at 41°7′12″N 87°51′36″W / 41.12°N 87.86°W / 41.12; -87.86 (41.12, -87.86).
According to the United States Census Bureau, the city has a total area of 12.8 square miles (33.0 km²), of which, 12.3 square miles (31.8 km²) of it is land and 0.5 square miles (1.2 km²) of it (3.76%) is water.